A long time ago, J.Berardi claimed in one of his articles posted in T-Mag that there are people whose bodies don’t exert adequate thermic effect after food ingestion; those are the people who generally end up fat after eating over the maintenance calories.
This was not debated on the T-Mag forum as far as I know - but JB proposed that adequate andrenergic response could be triggered by using a small amount of ephedrine along with meals. I do not know
This is an interesting idea for us, insuline resistant endomorphs with lingering metabolic rates and dead TEF numbers. Would you care to comment on this? I don’t know if JB, Cy or whoever is the current guru 
here at the moment is reading this but their input would be greatly appreciated. May the discussion begin. 